Apparatus for forming concentric,multiturn,nested dynamoelectric machine field coils

ABSTRACT

Apparatus for forming concentric, multi-turn, nested dynamoelectric machine field coils in which first and second concentric coil forms are provided each having first and second parts for respectively forming first and second opposite end portions of the first and second coils which are respectively connected by generally straight side portions. Each of the first parts comprises two elongated, spaced, parallel pins arranged to form generally straight first end portions of the respective coil, each of the second parts being laterally spaced from the respective first part thereby to form the side portions of the respective coil. Each of the second parts has a first section comprising two elongated, spaced, parallel pins and a second section comprising two elongated, spaced, parallel pins spaced from the first section pins on the side thereof remote from the respective first part and parallel with the first section pins. The pins of each of the second parts are arranged in a pattern to form the second end portion of the respective coil with generally straight side sections respectively joined to the respective side portions and converging to and joining a generally straight end section parallel with the first end portion.

United States Patent 91 Eminger et a1.

[54] APPARATUS FOR FORMING CONCENTRIC, MULTI-TURN, NESTED DYNAMOELECTRICMACHINE FIELD COILS [75] Inventors: Robert J. Eminger; Clayton L.

Tyson, both of Fort Wayne, Ind.

[73] Assignee: Essex International, Inc., Fort Wayne, Ind.

[22] Filed: Apr. 20, 1971 [21] Appl. No.: 135,613

Related US. Application Data [62] Division of Ser. No. 824,121, May 13,1969, Pat. No. 3,631,591, which is a division of Ser. No. 640,156, May22, 1967, Pat. No. 3,481,372.

[ 1 May 22,1973

3,415,292 12/1968 Ericson ..l40/92.l

Primary Examiner-Lowell A. Larson Attorney-Hood, Gust, Irish, Lundy &Coffey [57] ABSTRACT Apparatus for forming concentric, multi-turn,nested dynamoelectric machine field coils in which first and secondconcentric coil forms are provided each having first and second partsfor respectively forming first and second opposite end portions of thefirst and second coils which are respectively connected by generallystraight side portions. Each of the first parts comprises two elongated,spaced, parallel pins arranged to form generally straight first endportions of the respective coil, each of the second parts beinglaterally spaced from the respective first part thereby to form the sideportions of the respective coil. Each of the second parts has a firstsection comprising two elongated, spaced, parallel pins and a secondsection comprising two elongated, spaced, parallel pins spaced from thefirst section pins on the side thereof remote from the respective firstpart and parallel with the first section pins. The pins of each of thesecond parts are arranged in a pattern to form the second end portion ofthe respective coil with generally straight side sections respectivelyjoined to the respective side por tions and converging to and joining agenerally straight end section parallel with the first end portion.

1 Claim, 41 Drawing Figures PATENTEW- 3.734.145

SHEET 01 0F 27 INVENTORS ROBERT J. EMINGER CLAYTON L. TYSCN ATTORNEYSPATENTED M2 3134,1115

SHEET 02 [1F 27 I INVENTORS ROBERT J. EMINGER CLAYTON TYSON ATTORNEYSPATENTED MAY 2 21975 SHLET 03 [1F 27 E; ED

J NVENTORS CLEYETON L 1 Y5 ATTORNEYS PATENTEDHAY 22 1973 SHEET GM [1F 27INVIENTORS ROBERT J. EMINGER CLAYTON L. TYSON ATTORNEYS PATENTED WW221975 sum 05 [1F 27 INVENTORS ROBERT J. EMINGER CLAYTON L. TYSONATTORNEYS PATENTED ww22|9r5 sum as ur INVENTORS ROBERT J. EMINGERCLAYTON TYSON ATTORNEYS PATENT [-1 mzzlm FIE sum [18 [1F 27 imam!iHlllIll INVENTORS ROBERT J. EMINGER CLAYTON L. TYSON ATTORNEYS PATENTEDM2 3734.145

SHEET 09 0F 27 ATTORNEYS m M x w w w W W W mmmw 4 W mm I WW I /W W IJ.Lg J g P m H/ J m 7 5 RC E m m 9 w m NF l I. HI

PATENIE W22 I973 Hi: W5

SHEET ll HF 27 INVENTORS RGBERT J, EMINGER CLAYTON L. TYSON ATTORNEYSPATENTEUHAYQZIUYS 3 734 145 sum 12 or 2 INVENTORS ROBERT J. EMINGERCLAYTON L. TYSON A O NEYS PATENIEB HAY 2 21973 sum 13 HF 27 HM MNMMMROBERT ATTORNEYS PATENIE rm 2 2 I975 sum 1n HF 2 INVENTORS ROBERT J.EMIN GER CLAYTON L. TYS ON ATTORNEYS PATENTED MAY 22 I973 sum 15 [1F 27N') 8 R32 INVENTORS EMINGER ROBERT- J.

CLAYTON L. TYSON ATTORNEYS PATENTED MAYZZ I973 sum 15 OF 27 mjw MINVENTORS ROBERT J. EMING CLAYTON iL. TYS

AT ORNEYS W/m INVENTORS ROBERT J. EMINGER CLAYTON L. TYSON ATTORNEYSPATENTEDMYZZIW 3734.145

sum 18 [1F 27 HNVE NTORS ROBERT J. EMINGER CLAYTON L. TYSON ATTORNEYSPATENIE WW2 2191s sum 19 0F INVENTORS 5 ROBERT J. EMINGER TYSON CLAYTONATTORNEYS

1. In apparatus for forming concentric, multi-turn, nesteddynamoelectric machine coils, first and second coil form means forrespectively forming first and second concentric nested coils of a firstpole group, and third and fourth coil form means for respectivelyforming third and fourth concentric, nested coils of a second polegroup, each of said first and second coil form means comprising firstand second parts for respectively forming first and second opposite endportions of said first and second coils which are respectively connectedby generally straight side portions; each of said first parts comprisingtwo elongated, spaced, parallel pins arranged to form generally straightfirst end portions of the respective coil, each of said second partsbeing laterally spaced from the respective first part thereby to formsaid side portion of the respective coil; each of said second partshaving a first section comprising two elongated, spaced parallel pins,and a second section comprising two elongated, spaced, parallel pinsspaced from said first section pins on the side thereof remote from therespective first part and parallel with the first section pins, the pinsof each of said second parts being arranged in a pattern to form saidsecond end portions of the respective coil with generally straight sidesections respectively joined to the respective side portions andconverging to and joining a generally straight end section parallel withthe first end portion; one of said first and second coil form meansconcentrically surrounding the other with all of said pins beingparallel; the pins of both of said first sections lying on a firstcircle with the pins of one coil form means respectively spacedcircumferentially outwardly from the pins of the other coil form means,the pins of both of said second sections lying on a second circleconcentric with and smaller than said first circle with the pins of saidone coil form means respectively spaced circumferentially outwardly fromthe pins of said other coil form means, said first and second sectionpins of each of said second parts being arranged so that said sidesections of said second end portions respectively lie on radii of saidcircles with the respective end sections forming chords of said secondcircle which are respectively parallel with said first end portions,said third and fourth coil form means including at least first andsecond section pins identical to said first and second section pins ofsaid first and second coil form means, said first and second sectionpins of said third and fourth coil form means respectively lying on saidfirst and second circles.